examine

Review a pull request rigorously — establish the PR's stated intent and constraints, confirm the problem is real, sketch the obvious solutions before reading the diff, then audit the diff against the claimed approach, check correctness, completeness, architecture, conventions, security, data privacy, testing, reversibility, and dependency hygiene, and finish with an Occam pass judging whether the solution is right-sized. Validate load-bearing assumptions against independent sources. Returns a structured report with five signals — what was done well, gaps (what's missing), issues classified as Critical / High / Medium / Low, suggestions (constructive improvements), and known limitations (real but accepted). Use when the user says "/examine", "examine this PR", "review this PR", "review pr